Cardiolucina quadrata (B. Prashad, 1932)
Lucina quadrata (FOSSIL) (R.E. Dickerson, 1914 †)
Divalinga quadrisulcata (A.V.M.D. D'Orbigny,1846)
Lucina querida (FOSSIL) C.J. Maury, 1924 †
Lucina radiata (FOSSIL) Contejean, 1859 †
Monitilora ramsayi (E.A. Smith, 1885)
Callucina raquini (FOSSIL) (Leves in Graves, 1847 †)
Tehamatea rasmusseni (FOSSIL) Hryniewicz & al., 2014 †
Gloverina rectangularis R. von Cosel & P. Bouchet,2008
Ctena reevei (G.P. Deshayes, 1863)
Myrtina reflexa D.W. Taylor & E.A. Glover,2013
Fimbria regularis (FOSSIL) Fan, 1963 †
Cardiolucina rehderi (J.C.Jr. Britton, 1972)
Myrtea reticulata A. Adams, 1862
Lamellolucina reyrei (M. Nicklés, 1955)
Keletistes rhizoecus P.G. Oliver, 1986
Lucinoma rhomboidalis R. von Cosel & P. Bouchet,2008
Here ricthofeni W.M. Gabb, 1866
Stchepinskya rigaultiana (FOSSIL) (G.P. Deshayes, 1858 †)
Armimiltha riocanensis (FOSSIL) (C.J. Maury, 1917 †)
Lucina ripleyana (FOSSIL) B. Wade, 1926 †
Divaricella robertsi (FOSSIL) H.G. Richards, 1953 †
Lucina roquesana J. Gibson-Smith& W. Gibson-Smith, 1982
Loripes rosaceus E.A. Smith, 1899
Lucina roscoeorum (R.N. Kilburn, 1974)
Megaxinus rostrata (V. Pecchioli, 1864)
Loripes rotata A.A. Gould, 1861
Lucina rotundata (FOSSIL) F.A. Roemer, 1835 †
Anodontia rufolineatus (E.A. Smith, 1885)
Codakia rugifera (L.A. Reeve, 1835)
Cardiolucina rugosa (C. Hedley, 1909)
Volupia rugosa (FOSSIL) J.L.M. Defrance, 1829 †
Anodontia sagawai (FOSSIL) (M. Yokoyama, 1927 †)
Myrtea sagrinata (W.H. Dall, 1886)
Leucosphaera salamensis (S.G.A. Jaeckel& K.H.J. Thiele, 1931)